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Journal of Materials Science

, Volume 26, Issue 22, pp 6161–6170 | Cite as

Fatigue characteristics of pulsed MIG-welded Al-Zn-Mg alloy

  • P. K. Ghosh
  • S. R. Gupta
  • P. C. Gupta
  • R. Rathi
Papers

Abstract

Pulse-current MIG welding of Al-Zn-Mg alloy was carried out using an extruded section of base material and Al-Mg (5183) filler wire. During welding the pulse parameters such as the mean current and pulse frequency were varied and their effect on the geometry and porosity content of weld deposit as well as the fatigue life of the weldment was studied. The pulse parameters were found to affect significantly the geometry and porosity content of weld deposit and consequently the fatigue life of the weldment. For a comparative study, weldments were also prepared by using conventional continuous current MIG-welding process, where welding currents equivalent to the mean currents of pulsed process were used. The fatigue life of the weldment was correlated with the geometry and porosity content of weld deposit.

Keywords

Polymer Fatigue Porosity Welding Fatigue Life 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall. 1991

Authors and Affiliations

  • P. K. Ghosh
    • 1
  • S. R. Gupta
    • 1
  • P. C. Gupta
    • 1
  • R. Rathi
    • 1
  1. 1.Welding Research Laboratory, Department of Mechanical and Industrial EngineeringUniversity of RoorkeeRoorkeeIndia

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